HP b2600 Reference Guide

F
glFlush
Chapter 6
154
glFlush
glFlush: force execution of GL commands in finite time.
C Specification
void glFlush(void)
Description
Different GL implementations buffer commands in several different locations, including
network buffers and the graphics accelerator itself. glFlush empties all of these buffers,
causing all issued commands to be executed as quickly as they are accepted by the actual
rendering engine. Though this execution may not be completed in any particular time
period, it does complete in finite time.
Because any GL program might be executed over a network, or on an accelerator that
buffers commands, all programs should call glFlush whenever they count on having all
of their previously issued commands completed. For example, call glFlush before waiting
for user input that depends on the generated image.
Notes
glFlush can return at any time. It does not wait until the execution of all previously
issued GL commands is complete.
Errors
• GL_INVALID_OPERATION is generated if glFlush is executed between the
execution of glBegin and the corresponding execution of glEnd.
See Also
glFinish

HP b2600 Specifications

General

Brand	HP
Model	b2600
Category	Desktop
Language	English